it says: "A bona fide full version of Microsoft Windows: XP Home or Professional with Service Pack 2, WIndows Vista Home Basic, Home Premium, Business, or Ultimate. (No upgrade or multi-disc versions)." and my cd is a copy so. . . i cant tell . . . should i downld. the sp2? From whom did you get the XP Home CD? friend, he had a back-up copy and let me use it,